Test tube gripper



FIG. 1 is a front elevational view of a test tube gripper showing my new design;

FIG. 2 is a rear elevational view;

FIG. 3 is a right side elevational view;

FIG. 4 is a left side elevational view;

FIG. 5 a bottom plan view;

FIG. 6 top plan view; and,

FIG. 7 is a rear perspective view.

The portions shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a test tube gripper, as shown and described. 